How do I add a cooldown to my ability?

This ability is based on the keybind R in case you need to know that. This ability can continuously be spammed upon clicking R instead of waiting, lets say about 3 seconds, before being able to be used again. Is there a way I can add a cooldown? my code:

local tweenService = game:GetService("TweenService")

game.ReplicatedStorage.AirMagic.WindPushRE.OnServerEvent:Connect(function(player)
    local character = player.Character
    local properties = {
        Size = Vector3.new(60 ,60, 60)
    }
    local newForceField = game.ServerScriptService["Wind Magic"].WindPush.WPush:Clone()
    newForceField.Parent = game.Workspace
    newForceField.CFrame = character.HumanoidRootPart.CFrame

    local info = TweenInfo.new(0.9, Enum.EasingStyle.Quad, Enum.EasingDirection.InOut)

    local defaultWalkSpeed = character.Humanoid.WalkSpeed
    local defaultJumpPower = character.Humanoid.JumpPower
    character.Humanoid.WalkSpeed = 0
    character.Humanoid.JumpPower = 0
    character.Humanoid.MaxHealth = 100
    character.Humanoid.Health = 100

    local outTween = tweenService:Create(newForceField, info, properties)
    outTween:Play()

    wait(1)

    local properties2 = {
        Transparency = 0.75;
    }

    wait(1)

    local properties2 = {
        Transparency = 0.8;
    }

    wait(1)

    local properties2 = {
        Transparency = 0.9;
    }

    local info2 = TweenInfo.new(1, Enum.EasingStyle.Quad, Enum.EasingDirection.In)
    local fadeTween = tweenService:Create(newForceField, info2, properties2)
    fadeTween:Play()
    wait(3)
    character.Humanoid.WalkSpeed = 16
    character.Humanoid.JumpPower = 50
    character.Humanoid.MaxHealth = 100
    character.Humanoid.Health = 100
    newForceField:Destroy()
end)